Slow Transfer Speed on OMV

I am new to OMV let alone Linux. I am currently having issues boosting my transfer speed to my server. Currenty, I am only getting around 11.3mb/s. I have everything wired on CAT6, the switch ism't gigabit but I honestly dont think its the switch, the Router is Gigabit. Its on a closed network and I have no idea what to do to fix it. The system ins't in Raid. Any Suggestions??

If the switch is in between the router or server, you only get 100mbit which is roughly your 11,3 mb/s transfer speed. I bet, if you connect your PC / Notebook via ethernet to your router, you get gigabit. Or exchange the switch with a gigabit one.

Actually I have a new problem now, I get around 110mb/s now but when i go to move a file over to the server, It starts at 110mb/s and half way through the transfer it will dip down to nothing. What is the issue with this?